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Wet Weekend (Jan 07 2008)
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Author | Message |
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Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Lots of weather in the Bay Area over the weekend, leading to many power outages. Luckily our project was not affected. The new pseudo-random nature of our workunit creation finally worked itself out, and we were sending data at a relatively even pace. Speaking of sending data... At the end of last week my suspicions were confirmed: the router between us and our ISP (a Cisco 2811) has been CPU bound for who-knows-how-long, thus causing an artificial 60 Mbit/sec cap on our outbound packets. Further research will determine whether we can improve its performance or if we need to procure a better router. We had an assimilator get jammed on a broken result. I had to delete the result to clear the pipes. This happened once before a week or two ago. A little detective work this morning uncovered that both such broken results were processed by optimized clients. I'm just sayin'. This could easily be a conincidence. Spent a large chunk of the day trying to coax another Intel-donated server to life. We've gotten a lot of stuff from Intel recently, all in varying states of functionality (some missing CPUs, some have test boards, etc.). This particular one (4 2.66GHz CPUs, 8 GB RAM) was dead in the water for a while as it wouldn't respond to any keyboard/mouse. However, the other day I noticed one of the front-side fan modules wasn't seated properly. I adjusted it, and now the server sees all input devices. It's still a little squirly, but may be a worthwhile web server after all. We're calling it "maul" (sticking to the current "darth" theme). I'll announce it again if it actually proves to be ready for prime time. - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
Dr. C.E.T.I. Send message Joined: 29 Feb 00 Posts: 16019 Credit: 794,685 RAC: 0 |
Matt - keep up the great work Sir . . . lucky 'bout that rain too, eh (re: no damage) stay well BOINC Wiki . . . Science Status Page . . . |
seti@elrcastor.com Send message Joined: 30 Jan 00 Posts: 35 Credit: 4,879,559 RAC: 0 |
googled "2811 throughput" and found http://www.derkeiler.com/Mailing-Lists/Firewall-Wizards/2006-10/msg00027.html that said "the 2811 throughput is 61.44 Mbps" |
Sharkbait Send message Joined: 2 Jun 99 Posts: 11 Credit: 6,333,145 RAC: 0 |
Matt, You upped the ready to send queue to 1 million, but it seems to be hitting a cap at about 800,000. Is that a computing limitation? Good workings! Ben |
djmotiska Send message Joined: 26 Jul 01 Posts: 20 Credit: 29,378,647 RAC: 105 |
At the end of last week my suspicions were confirmed: the router between us and our ISP (a Cisco 2811) has been CPU bound for who-knows-how-long, thus causing an artificial 60 Mbit/sec cap on our outbound packets. So the problem was with router, as I suspected in previous thread. Glad to see you found the cause of the problem, hopefully you can fix it. OTOH, I hope my post (my first post) helped you. |
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